/**
* Copyright 2005 JBoss Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.drools.workflow.core.node;
import org.drools.definition.process.Connection;
import org.drools.workflow.core.Constraint;
import org.drools.workflow.core.impl.ConnectionRef;
/**
* Default implementation of a milestone node.
*
* @author <a href="mailto:kris_verlaenen@hotmail.com">Kris Verlaenen</a>
*/
public class MilestoneNode extends StateBasedNode implements Constrainable {
private static final long serialVersionUID = 510l;
private String constraint;
public void addConstraint(ConnectionRef connection, Constraint constraint) {
if (connection != null) {
throw new IllegalArgumentException(
"A Milestone node only accepts one simple constraint");
}
this.constraint = constraint.getConstraint();
}
public void setConstraint(String constraint){
this.constraint = constraint;
}
public String getConstraint(){
return this.constraint;
}
public void validateAddIncomingConnection(final String type, final Connection connection) {
super.validateAddIncomingConnection(type, connection);
if (!org.drools.workflow.core.Node.CONNECTION_DEFAULT_TYPE.equals(type)) {
throw new IllegalArgumentException(
"This type of node only accepts default incoming connection type!");
}
if (getFrom() != null) {
throw new IllegalArgumentException(
"This type of node cannot have more than one incoming connection!");
}
}
public void validateAddOutgoingConnection(final String type, final Connection connection) {
super.validateAddOutgoingConnection(type, connection);
if (!org.drools.workflow.core.Node.CONNECTION_DEFAULT_TYPE.equals(type)) {
throw new IllegalArgumentException(
"This type of node only accepts default outgoing connection type!");
}
if (getTo() != null) {
throw new IllegalArgumentException(
"This type of node cannot have more than one outgoing connection!");
}
}
}